| 摘要 |
PURPOSE:To obtain a target angle error from a phase difference between output signals of both signal processing channels, by converting into a phase the amplitude of a signal received over monopulse antenna sum and difference channels that correspond to target angle information. CONSTITUTION:A signal received over a monopulse antenna sum channel is frequency-converted by the 1st mixer 3 and local oscillator 6 and that over a difference channel is frequency-converted and phase-adjusted by the 2nd mixer 4, phase shifter 5 and local oscillator 6. Then, both the signals are mixed together by hybrid 7 and inputted to the 1st and 2nd signal processor 8 and 9, whose outputs have clatters removed and are converted into video signals, which are inputted to the 1st and 2nd FET processors 10 and 11 for Fourier transform, so that error detector 12 will detect the phase difference between both these signals. This constitution can obtain a target angle error from the phase difference between output signals of both these channels. |
